The airquality dataset contains daily air quality measurements in New York from May to September, 1973.
We are interested in the relationship of the following variables according to different months:
Ozone: Mean ozone in parts per billion from 13:00 to 15:00 hours at Roosevelt Island,
Solar.R: Solar radiation in Langleys in the frequency band 4000–7700 Angstroms from 08:00 to 12:00 hours at Central Park,
Temp: Maximum daily temperature in degrees Fahrenheit at La Guardia Airport.